This is initial API support required for enabling SurfaceTexture backed zero-copy for Android

ui/gl/android/surface_texture.h

Index: ui/gl/android/surface_texture.h
diff --git a/ui/gl/android/surface_texture.h b/ui/gl/android/surface_texture.h
index 62e375f796f45959e1ca0de2e37b7144c5e66ba3..01573e5730cefc3a8a56a8aaf887fd05e23f4a39 100644
--- a/ui/gl/android/surface_texture.h
+++ b/ui/gl/android/surface_texture.h
@@ -21,7 +21,7 @@ namespace gfx {
 class GL_EXPORT SurfaceTexture
     : public base::RefCountedThreadSafe<SurfaceTexture>{
  public:
-  explicit SurfaceTexture(int texture_id);
+  SurfaceTexture(int texture_id, bool single_buffered = false);

[reveman, 2014/03/08 14:10:20]

s/single_buffered/single_buffer_mode/ to be consistent with Android API and I
prefer if it doesn't have a default value.

[sohanjg, 2014/03/08 14:20:15]

Done.

 
   // Set the listener callback, which will be invoked on the same thread that
   // is being called from here for registration.
@@ -33,6 +33,10 @@ class GL_EXPORT SurfaceTexture
   // Update the texture image to the most recent frame from the image stream.
   void UpdateTexImage();
 
+  // Releases the the texture content. This is needed in single buffered mode

[reveman, 2014/03/08 14:10:20]

s/the the/the/

[sohanjg, 2014/03/08 14:20:15]

Done.

+  // to allow the image content producer to take ownership of the image buffer

[reveman, 2014/03/08 14:10:20]

Comment should end with a period ".".

[sohanjg, 2014/03/08 14:20:15]

Done.

+  void ReleaseTexImage();
+
   // Retrieve the 4x4 texture coordinate transform matrix associated with the
   // texture image set by the most recent call to updateTexImage.
   void GetTransformMatrix(float mtx[16]);